Winding apparatus and tensioning means therefor



Aug. 6, 1963 P. H. NORRHOLM WINDING APPARATUS AND TENSIONING MEANSTHEREFOR 4 Sheets-Sheet 1 Filed Feb. 12, 1962 FIG.

6, 1963 P. H. NORRHOLM 3,100,089

WINDING APPARATUS AND TENSIONING MEANS THEREFOR Filed Feb. 12, 1962 4Sheets-Sheet 2 I NVEN TOR. P4114 d WORK/904M BY M0 WINDING APPARATUS ANDTENSIONING MEANS THEREFOR 4 Sheets-Sheet 3 Filed Feb. 12, 1962 6, 1963P. H. NORRHOLM 3,100,089

WINDING APPARATUS AND TENSIONING MEANS THEREFOR Filed Feb. 12, 1962 4Sheets-Sheet 4- FIG. 4

74 l i 50 8/ ii 62 INVENTOR.

BY M

3,100,089 WlNDlNG APPARATUS AND TENSIONING MEANS THEREFOR Paul H.Norrholm, 91 Midland Blvd., Lake Ronkonkoma, N.Y. Filed Feb. 12, 1962,Ser. No. 172,473 6 Claims. (Cl. 2426) This invention relates to awinding apparatus and more particularly to a winding apparatus forapplying a covering to coils and the like.

An object of the invention is to provide a winding apparatus with atensioning device by means of which a covering in the form of a strip ofmaterial is tightly wound on the coil with the convolutions thereofdisposed in equally arranged relation.

Another object of the invention is to provide a winding apparatus forcontinuously winding a strip of material in covering relation on a coilfrom a rotatably mounted shuttle on which the strip of material isarranged in folded back and forth manner and with the coil mounted formovement in timed relation with the movement of the shuttle and throughwhich the shuttle moves with the rotation thereof. Another object of theinvention is to provide a winding apparatus of said character in whichthe tensioning device maintains a tension on the strip as the same isfed from the shuttle and wound onto the coil.

Still another object of the invention is to provide a tensioning devicewhich alternately engages and releases the strip as the same is unwoundfrom the shuttle.

Still another object of the invention is to provide a winding apparatuswith a rotatably mounted tensioning device having pivotally mounted pinsbiased for movement into the path of travel of the strip as the same isunwound from the shuttle with the rotation thereof for alternatelydisposing the strip in and out of engagement with the pins fortensioning the strip.

With the foregoing and other objects in view, reference is now made tothe following specification and accompanying drawings in which thepreferred embodiment of the invention is illustrated.

In the drawings:

FIG. 1 is a view in elevation of a winding apparatus constructed inaccordance with the invention.

FIG. 2 is a rear view thereof.

FIG. 3 is a top plan view of the apparatus with the front thereof on theleft.

FIG. 4 is an enlarged side view of the tensioning device.

FIG. 5 is an end view taken along the line 55 of FIG. 4.

FIG. 6 is a sectional view taken approximately along the line 6-6 ofFIG. 4.

Referring to the drawings, the winding apparatus includes a shuttle 1!of annular formation which is mounted for rotation in clockwisedirection as viewed in FIG. 1 of the drawings. The shuttle extendsthrough the axial opening in a coil C and the like for applying a stripS of material in covering relation on the coil. The coil is tates Patent0 mounted for rotation in a horizontal plane in synchronism with themovement of the shuttle so that a lap is applied 3,1fl0y089 PatentedAug. 6, 1963 "Ice retain the sectors in complete annular formation.strip S is wound upon the sector 11 with the ends of the folds thereoflocated adjacent the ends of said sector and with a slot '15 in thebottom wall thereof adjacent the hinged connection 13 through which thestrip is drawn with the rotation of the shuttle.

The shuttle is supported by and mounted for turning movement betweenflanged rollers 17, 18, 19 and 20 about which an endless belt 21 istrained with the inner course of the belt disposed in frictionalengagement with the flanges of the shuttle. The pulleys 17, 18 and 19are a-djustably supported by a stand 22 aifixed in upright relation on abase 23 to provide the proper tension to the belt 21. The pulley 20 isaffixed to a drive shaft 24 journaled for rotation in pillow blocks 25and 26 mounted on the base 23. A drive pulley 27 is affixed to saiddrive shaft and over which drive pulley is trained an endless belt 28operatively connected with drive means for turning the pulley 20' incounter-clockwise direction to thereby rotate the shuttle in clockwisedirection as hereinbefore described. The pulleys 17 and 18 are rotatablymounted on stub shafts 29 and 30 carried by split blocks 31 and 32respectively which are slidably and adj-ustably arranged on a horizontalbar 33. The said bar is adjustable horizon-tally in a split block 34which block is adjustable vertically on the stand 22. The pulley 19 ismounted for turning movement on a stub shaft 35 carried by a split block36 which is mounted for vertical adjustment on the stand 22.

The coil C is mounted for rotation between rollers 38, 39 and 40, therollers 38 and 39 being freely rotatable on vertical shafts 42 and 4-3respectively which are affixed in upright relation to flat bars '44 and-45. The said bars are supported on a plate 46 aflixed to a supportingpost 47 which is secured in upright relation on the forward portion ofthe base 23. The bars 44 and are slotted for adjustably receivingthreaded studs 48 for tightening the bars in any desired adjustedposition on the plate 46 to dispose the peripheries of the rollers 38and 39 in engagement with the periphery of the coil. The roller 40 isaffixed to the upper end of a vertical shaft 49 journaled for rotationin a swing arm 50 which is mounted for swinging movement on the post 47.The shaft 49 is operatively connected with driving means for impartingstep by step turning movement to the coil in timed relation with therotation of the shuttle 10.

The plate 46 is centrally recessed as at 52 and the coil is supported onthe flanges 51 of the rollers 38 and 39 to dispose the coil above saidrecessed portion. This provides means by which the shuttle moves throughthe axial opening in the coil and through the recessed portion of theplate with the feeding of the strip S therefrom.

The coil C is advanced with each rotation of the shuttle to therebyapply a wrap or convolution about the coil with each wrap or convolutionoverlapping the previous wrap or convolution. For this purpose, theshaft 49' is operatively connected with the drive shaft 24 by means ofpivotally mounted levers 53 and 54 having a pivotally mounted. slide andslot connection 55 with the levers 53 provided with a cam follower inthe form of a wheel 56 journaled on the pin '57 and biased by a spring58 into engagement with a cam wheel 59* mounted on the drive shaft 24.The lever 54 is pivotally mounted on a vertical pin 60 to an arm 61swingably mounted on the shaft 49 and with a coil spring spring 62surrounding said shaft Theto thereby effect arcuate swinging of the arm61 to alternately tighten and loosen the spring 62 on the shaft 49.Thus, when the outer end of the lever 53 is swung in one direction, thelever 54 will be moved so as to tighten the spring 62 on the shaft i9and thereby rotate the shaft 49 sufliciently to impart a step movementto the coil C. With the movement of the lever 53 in the oppositedirection the lever 54 is swung so as to loosen the spring 62 on theshaft 49 for relative sliding movement therewith. The roller 40 isbiased against the coil C by a coil spring 67 arranged on the post 47and affixed at its ends to said post and the swing arm 50.

In order to maintain the strip S in tensioned relation as the same iswound about the coil C with the rotation of the shuttle, a tensioningdevice 70 is provided which is mounted :for rotation on a stub shaft 71extending axially of the shuttle substantially at the center thereof.The stub shaft 71 is mounted on an angularly arranged bar 72 with theupper end of said bar adjustably secured on the stand 22 by means of asplit block 73. The tensioning device includes a hub 74 which isrotatably mounted on the stub shaft 71 and has parallel arms 75 and 75'arranged for rotation with the hub in a vertical plane at one side ofthe plane of the shuttle. The arms are mounted in parallel openings inthe hub on opposite sides of the stub shaft for limited turning movementand are provided with pins 77 which are pivotally mounted on the outerends thereof on pivot pins 78- for movement of said pins from projectingrelation laterally of the arms and in the path of movement of the stripS as the same is fed from the shuttle and to outwardly extendingrelation in prolongation of the arms respectively. The arms are biasedto normally dispose the pins in said laterally projecting relation bycoil springs 79 arranged on said arms and affixed at their inner ends tothe hub and at their outer end to collars 80 mounted on said armsrespectively. The arms and the hub are provided with stop lugs 81 and82' to limit the turning of the arms with reference to said hub and todispose the pins in said laterally projecting relation. The pins arebiased into said laterally projecting relation by coil springs 83 whichare affixed at their ends to the arms and pins respectively.

With each rotation of the shuttle one of the pins 77 is engaged by thestrip S to form a loop L therein as shown in FIG. 1 of the drawings. Thetensioning device is biased against too free turning movement by a coilspring 84 freely mounted on the stub shaft '71 between collars 85 and86. The collar 85 is aifixed to the shaft 71 while the collar 86 isslidably mounted thereon and is keyed thereto by a pin 87 anchored inthe shaft and extending freely into a slot 88in the collar 86 wherebythe collar rotates with the shaft but is moveable longitudinally thereoftoward and away from the hub 74 of the tensioning device. The spring 84biases the collar 86 against the hub 74 and for this purpose the collar86 has a large flat face which bears against a side face of the hub.Thus, as each loop L engages one of the pins 77 the tensioning device isrotated in a clockwise direction. When the tension on the loop L exceedsthe tension of the spring 84, the loop L will rotate the arm withreference to the hub against the bias of the spring 79 and the pin 77will be turned in prolongation of the arm against the bias of its spring83 to thereby free the loop from the pin. This takes place when the pinis moved into adjacent relation with the coil C and the arm is in asubstantially horizontal position. When in this position the tensioningdevice ceasesto rotate. With the continued rotation of the shuttle thestrip S being fed therefrom engages the pin remotely arranged withreference to the coil C so as to form another loop 'L in the strip andeffect rotation of the tensioning device as hereinbefore described.

The endless belt 28 operating over the drive pulley 27 is trained abouta pulley mounted on a motor driven shaft (not shown) adapted to beconnected with a source of current supply. The motor and shaft islocated below the base 23 and the same is cut out as at 86 through whichthe endless belt 28 extends.

With the rotation of the drive shaft 24, the cam follower 56 and camwheel 59 functions to positively move the outer end of the lever 53 backand forth about the pivot 67 to thereby effect partial turning of theshaft 49 and coil C in timed relation with the rotation of the shuttle.The lever 53 is pivoted by the pin 67 to dispose the same for swingingmovement in a horizontal plane above the base 23 and to position the camfollower 56 in engagement with the cam wheel 59 below the drive shaft24.

The swinging arm 50 is adapted to be swung out of engagement with thecoil C by means of an eccentric cam lever 88 pivoted for swingingmovement on the pivot 89 and having a handle member 90 for manuallyswinging the lever against the bias of the spring 67.

It will be understood that the hinge section 12 of the shuttle is swunginwardly to dispose the shuttle in the axial opening in the coil andwhen so disposed the section 12 is moved into latched engagement withthe section 11 thereof to retain the sections in annular formationduring rotation.

The strip material S of any desired character such as waxed paper,insulating tape and the like and the same may be wound on the coil toprovide any desired number of layers thereon.

When the motor driven means is placed in operation the shuttle and coilwill be continuously rotated to wind the strip material onto the coil,the tensioning device functioning with each rotation of the shuttle tomove the strip material into engagement with one of the fingers 77 toform a loop L therein which decreases in size as the finger approachesthe coil with the turning of the tensioning device. This shortening ofthe loop overcomes the means biasing the finger and arm whereby the sameare rotated to free the loop therefrom. This discontinues the turning ofthe tensioning device until another loop is formed about the fingeroppositely disposed from the one previously engaged by the loop.

While the preferred form of the invention has been shown and describedherein, it is to be understood that the same shall not be so limited butshall cover and include any and all modifications of the invention whichfall within the purview thereof.

What is claimed is:

1. In a device of the character described, an annular shuttle adapted tohold a supply of strip material which is fed therefrom through thebottom thereof, a base, means mounting said shuttle on said base forrotation, power means operatively' engaging said shuttle for rotatingthe same, a support carried by said base for rotatably mounting a coilthereon in a plane in angular relation to the plane of said shuttle andthrough the axial opening of which coil the shuttle moves in itsrotation for winding the strip material in covering relation on theperiphery of the coil, a rotatably mounted tensioning means, biasingmeans exerting a pressure on said tensioning means retaining saidtensioning means against too free rotation, said tensioning meansincluding spaced elements mounted thereon for turning movement into andout of the path of movement of said strip material as the same is vfedfrom said shuttle with the rotation thereof to thereby form in saidstrip material loops extending about said elements respectively betweenthe shuttle and the attachment of said strip material to said coil,means biasing said elements to normally dispose the same in the path ofmovement of said strip material whereby the loops formed about saidelements respectively function to rotate the tensioning means a partialrotation and producing by said biasing of said tensioning means againsttoo free rotation a tautness in the loops as the same are wound on saidcoil, and whereby each-loop rotates the element about which it engagesout of the path of movement of said strip material with the movement ofsaid element into adjacent relation with the coil to thereby free theloop therefrom and discontinue turning of said tensioning means until asubsequent loop is formed in the strip material.

2. In a device of the character described, an annular shuttle adapted tohold a supply of strip material which is fed therefrom through anopening in the bottom thereof, a base, means mounting said shuttle onsaid base for rotation in an upright plane, power means operativelyengaging said shnttle for rotating the same, a support carried by saidbase for rotatably mounting a coil thereon in a plane in angularrelation to the plane of said shuttle and through the axial opening ofwhich coil the shuttle moves in its rotation for winding the stripmaterial in covering relation on the periphery of the coil, tensioningmeans, means mounting said tensioning means for rotation in an uprightplane adjacent the plane of said shuttle, biasing means exerting apressure on said tensioning means retainting said tensioning meansagainst too free rotation, said tensioning means including parallel armsmounted for turning movement relative to said tensioning means,elemerits at the ends of said arms respectively, means biasing said armsand said elements to normally dispose the elements in the path ofmovement of said strip material as the same is fed from said shuttlewith the rotation thereof to thereby form loops in said strip materialextending about said elements respectively between the shuttle and theattachment of said strip material to said coil whereby the loops formedabout said elements respectively function with the rotation of theshuttle to rotate the tensioning means a partial rotation and producingby said biasing of said tensioning means against too free rotation atautness in said loops as the same are wound on said coil, and wherebyeach loop rotates the element about which it engages out of the path ofmovement of said strip material with the movement of said element intoadjacent relation with the coil to thereby free the loop therefrom anddiscontinue turning of said tensioning means until a subsequent loop isformed in the strip material.

3. In a device of the character described, an annular shuttle adapted tohold a supply of strip material in folded back and forth relationthereon which is fed therefrom through an opening in the bottom of saidshuttle, a base, means mounting said shuttle on said base for rotationin an upright plane, power means operatively engaging said shuttle forrotating the same, a support carried by said base for rotat-ablymounting a coil thereon in a plane disposed in substantially rightangular relation to the plane of said shuttle and through the axialopening of which coil the shuttle moves in its rotation for winding thestrip material in covering relation on the periphery of the coil,tensioning means, means carried by said base mounting said tensioningmeans for rotation in an upright plane adjacent the plane of saidshuttle, biasing means exerting a pressure on said tensioning meansretaining said tensioning means against too free rotation, saidtensioning means including parallel arms mounted for turning movementthereon about the longitudinal axes of said arms respectively, elementsmounted on the outer ends of said arms respectively for turning movementinto and out of laterally projecting relation from said arms and intoand out of the path of movement of said strip material as the same isfed from said shuttle with the rotation thereof, means biasing said armsand said elements to normally dispose the elements in said laterallyprojecting relation in said path of movement of said strip material tothereby form loops in said strip material extending about said elementsrespectively between the shuttle and the attachment of said stripmaterial to said coil whereby the loops formed about said elementsrespectively function with the rotation of the shuttle to rotate saidtensioning means a partial rota-tion and producing by said biasing ofsaid tensioning means against too free rotation a tautness in said loopsrespectively as the strip material in each loop is wound about said coilwith the rotation of the shuttle, and whereby each loop rotates theelement about which 6 it engages out of the path of movement of saidstrip material with the movement of said element into adjacent relationwith the coil with the rotation of the tensioning means to thereby freethe loop therefrom and discontinue turning of said tensioning meansuntil the formation of a subsequent loop in the strip material.

4. In a tensioning device for tensioning the winding of strip materialabout a coil from an annular shuttle on which the strip material iswound and with the coil and shuttle mounted for rotation on a supportwith the shuttle extending through the axial opening of the coil, powermeans operatively engaging said shuttle for rotating the same, biasingmeans engaging said tensioning device retaining the same against toofree rotation, said tensioning device including parallel arms, meansmounting said arms on said support for rotation in a plane adjacent theplane of said shuttle, elements mounted on said arms for turningmovement therewith, means mounting said elements on said arms forturning movement into and out of the path of movement of the stripmaterial as the same is fed from said shuttle to said coil with therotation of the shuttle, and means biasing said elements to normallydispose the same in said path of movement of said strip material tothereby engage said strip material and form loops therein extendingabout said elements respectively between the shuttle and said ooilwhereby the loops function with the rotation of the shuttle to rotatesaid arms a partial rotation and producing by said biasing of saidtensioning device against too free rotation a tautness in the stripmaterial between the coil and shuttle, and whereby each loop rotates theelement about which it engages out of the path of movement of said stripmaterial with the movement of said element into adjacent relation withthe coil with the rotation of the arms to thereby free the looptherefrom and discontinue turning of said arms until the formation of asubsequent loop in the strip material.

5. In a tensioning device for tensioning the Winding of strip materialabout a coil from an annular shuttle on which the strip material iswound in a back and forth manner and with the coil and shuttle mountedfor rotation on a support with the shuttle extending through the axialopening of the coil, power means operatively engaging said shuttle forrotating the same, said tensioning device including parallel arms, meansmounting said tensioning device on said support for rotation in a planeadjacent said shuttle, biasing means carried by said mounting meansbiasing said tensioning means against too free rotation, means mountingsaid arms on said tensioning device for independent rotationrespectively, elements mounted on the outer ends of said arms formovement with said arms, means carried by said arms mounting saidelements on said arms for turning movement into and out of the path ofmovement of the strip material as the same is fed from said shuttle tosaid coil with the rotation of the shuttle, means carried by said armsbiasing said elements to normally dispose the same in said path ofmovement of said strip material to thereby engage said strip materialand form loops therein extending about said elements respectivelybetween the shuttle and said coil whereby the loops function with therotation of the shuttle to rotate said arms a partial rotation andproducing by said biasing of said tensioning means against too freerotation a tautness in the strip material between the coil and theshuttle and whereby each loop rotates the element about which it engagesout of the path of movement of said strip material with the movement ofsaid element into adjacent relation with the coil with the rotation ofthe arms to thereby free the loop therefrom and discontinue turning ofsaid arms until the formation of a subsequent loop in the stripmaterial.

6. In a tensioning device for tensioning the winding of strip materialabout a coil from an annular shuttle on which the strip material iswound in a back and forth manner and with the coil and shuttle mountedfor rotation on a support with the shuttle extending through the axialopening of the coil and the strip material being fed from the shuttlethrough a radial opening in the'annular wall thereof, power meansoperatively engaging said shuttle for rotating the same, said tensioningdevice including parallel arms, means mounting said tensioning device onsaid support for rotation in a plane adjacent to and parallel with theplane of said shuttle, biasing means carried by said tensioning devicebiasing said tensioning device against too free rotation, means mountingsaid arms on said tensioning device for independent turning movementrespectively, elements mounted on the outer ends of said arms forrotation therewith and for turning movement into the plane of theshuttle and into and out of the path of movement of the strip materialas the same is fed from said shuttle to said coil with the rotation ofthe shuttle, means carried by said arms biasing said elements tonormally dispose the same in said path of movement of said stripmaterial to thereby engage said strip material and form loops thereinextending about said 7 free rotation a tautness in the strip materialbetween the coil and the shuttle and whereby each loop rotates theelement about which it engages out of the path of movement of said stripmaterial with the movement of said element into adjacent relation withthe coil with the rotation of the arms to thereby free the looptherefrom and discontinue turning,- of said arms until the formation ofa subsequent loop in the strip material.

References Cited in the file of this patent UNITED STATES PATENTS2,254,934 Brown Sept. 2, 1941 2,367,489 Dowd Jan. 16, 1945 2,726,817Barrows Dec. 13, 1955 2,793,818 Clarke et al May 28, 1957

1. IN A DEVICE OF THE CHARACTER DESCRIBED, AN ANNULAR SHUTTLE ADAPTED TOHOLD A SUPPLY OF STRIP MATERIAL WHICH IS FED THEREFROM THROUGH THEBOTTOM THEREOF, A BASE, MEANS MOUNTING SAID SHUTTLE ON SAID BASE FORROTATION, POWER MEANS OPERATIVELY ENGAGING SAID SHUTTLE FOR ROTATING THESAME, A SUPPORT CARRIED BY SAID BASE FOR ROTATABLY MOUNTING A COILTHEREON IN A PLANE IN ANGULAR RELATION TO THE PLANE OF SAID SHUTTLE ANDTHROUGH THE AXIAL OPENING OF WHICH COIL THE SHUTTLE MOVES IN ITSROTATION FOR WINDING THE STRIP MATERIAL IN COVERING RELATION ON THEPERIPHERY OF THE COIL, A ROTATABLY MOUNTED TENSIONING MEANS, BIASINGMEANS EXERTING A PRESSURE ON SAID TENSIONING MEANS RETAINING SAIDTENSIONING MEANS AGAINST TOO FREE ROTATION, SAID TENSIONING MEANSINCLUDING SPACED ELEMENTS MOUNTED THEREON FOR TURNING MOVEMENT INTO ANDOUT OF THE PATH OF MOVEMENT OF SAID STRIP MATERIAL AS THE SAME IS FEDFROM SAID SHUTTLE WITH THE ROTATION THEREOF TO THEREBY FORM IN SAIDSTRIP MATERIAL LOOPS EXTENDING ABOUT SAID ELEMENTS RESPECTIVELY BETWEENTHE SHUTTLE AND THE ATTACHMENT OF SAID STRIP MATERIAL TO SAID COIL,MEANS BIASING SAID ELEMENTS TO NORMALLY DISPOSE THE SAME IN THE PATH OFMOVEMENT OF SAID STRIP MATERIAL WHEREBY THE LOOPS FORMED ABOUT SAIDELEMENTS RESPECTIVELY FUNCTION TO ROTATE THE TENSIONING MEANS A PARTIALROTATION AND PRODUCING BY SAID BIASING OF SAID TENSIONING MEANS AGAINSTTOO FREE ROTATION A TAUTNESS IN THE LOOPS AS THE SAME ARE WOUND ON SAIDCOIL, AND WHEREBY EACH LOOP ROTATES THE ELEMENT ABOUT WHICH IT ENGAGESOUT OF THE PATH OF MOVEMENT OF SAID STRIP MATERIAL WITH THE MOVEMENT OFSAID ELEMENT INTO ADJACENT RELATION WITH THE COIL TO THEREBY FREE THELOOP THEREFROM AND DISCONTINUE TURNING OF SAID TENSIONING MEANS UNTIL ASUBSEQUENT LOOP IS FORMED IN THE STRIP MATERIAL.